Type-writing machine.



L. W. LABOFISH.

TYPE WRITING MACHINE.

APPLICATION rum: MAY 12.1910.

1,900,019, v Patented Au 8, 1911.

Q. N Q. L:

l N'V'ENTEJR f%% 4 Q f amw 14E ATTUFQNEY UNLTED taTATES PATENT OFFICE.

LOUIS W. LABOFISH, OF WASHINGTON, DISTRICT OF COLUMBIA, ASSltG-NQR TOUNION TYPEVVRITER COMPANY. OF ILION, NEW YORK, A CORPORATION OF NE?YORK.

TYPE-WRITING MACHINE.

To at! whom it may concern:

Be it known that L Lens \V. lmnorisn, citizen ot the l nited States. andresident of lil'ightwood Park, city of \Vashington, District ofColumbia, have invented certain new and nselnl lmprovements inType-'riting Machines, of which the following a specification.

My invention relates to typewriting machines and more partieularhv tomeans for maintaining a fixed relation between antitriction rollers forsupporting the carriage and for maintaining a proper relation betweensaid rollers and the carriage and between the rollers and the frame ofthe ma chine during the travel of the carriage.

The main object of my invention is to provide simple. etlicient andinexpensive means of the ehararter speeitied.

A further object of my invention is to provide llltlIlS of the charaetcrspeeitied which may be readily applied to existing forms of typewritingnnnrhines without attering the structural 'l eatnres of said machines asthey now exist.

To the above and other ends which will hereinafter appear. my inventionconsists in the t'eatnres ot construction, arrangements of parts andcombinations ot devices to he hereinafter described and particularlypointed out in the appended claim.

in the :u-eompanying drawings wherein lil 'e reference rliarm'ters ind'tale corresponding parts in the various views, l igure l is atragmentary vertical fore and aft seetional view showing so much ot' oneterm of typewriting machine as is necessary to illusirate my inventionin its embodiment therein. Fig. 2 is a t'ragmentary hottom'view showingportions of the carriage and its supporting means, together with themeans for controlling the position t he anti-trietion rollers. Fig. 2)is a detail rear view of the anti-t'rietion rollers aml the separatortheret'or, together with a. pinion carried by said separator. Fig. t isan enlarged detail transverse seetional view lillttll through the frontcarriage trucks.

1 have shown my llIVtlltlUll applied in the present instance to a No. 10Remington inachine in which the invention maybe readily embodiedwithout. changing the structural 'teatnres of said machine as they nowexist. It. should be understood, however, that the Specification ofLetters Patent.

Application filed May 12. 1610. Serial No. 560,838.

Patented Aug. 8, 1911.

invention may be embodied in other styles of typewriting, machines.

The corner posts 1 of the machine support a top plate 2 from whichupwardly extending lugs 23 project. Front and rear fixed carriage tracksor rails 4 are supported on the lugs 23 and have grooved faees, asindicated at 5, for the reception of and cooperation with anti-frictionrollers (3 and T. The rollers (l and T for each of these taeks turn onpivots and 9 respectively which are arranged at substantially rightangles to each other, the pivots 9 being received in sheet metal arms 10ot a roll holder or separator. The planes of the arms 10 aresubstantially at right angles to the planes of the pivot receiving arms11 formed integral with the arms 10. The arms it are riveted at 12 toparallel plates 13 which. together with the arms 10 and 11. constitute aroll holder or separator for maintaining the rollers in fixed relationone to another. A pair of crossed anti t'riction rollers t3 and T areprovided at each end to the roller separator as shown in l ig. 3. Therollers (i and 7 cooperate with tront' and rear rails or tracks 14formed on front and rear Cl'Us-l bars of a earriage 15. The tracks llare grooved at 16 for the rereption of and coi'ipcration with theanti-friction rollers ti and T. The antitriction rollers thus supportthe carriage and guide it in its movement. from side to sideot themachine over the top plate. lCaeh rollerseparator has a block 17interposed between the parallel plates 13 and se- .e.ure.d thereto byrivets 18. A vertically dis posed opening is drilled through each block17 and through the edge of one of the parallel plates 13 for thereception of a spindle 19, riveted or headed at 20, to rigidly connectthe spindle with the roller separator. llach spind elt) extendsdownwardly from its roller separator through the space provided betweenthe associated tracks 4 and 14. A pinion 21 is mounted to turn freely oneach spindle l9 and is supported in plaee bv the lower headed end 22 ofthe spindle.

The etl'eetive diameter of each pinion 21 is,

shown in the present instance as about the same diameter as theanti-friction rollers (i and 7, although the diameter of the pinions maybe varied at. will. Pinions of about;

the size of those shown in the present in stance lend themselves readilyto embodiment in the No. 10 Remington machine. Racks 23 are fixed byscrews 2a to the bottom of the fixed tracks a and are each arranged tomesh with the associated pinion 21 on one side thereof. Oppositelydisposed racks 25 are fixed to the tracks 14: on the carriage by screws26, the teeth of each rack 25 engaging with the associated pinion 21 onthe side thereof opposite the companion rack 3.

The construction and arrangement of the parts are such that a movementof the carriage will produce a relative movement between the racks 25and and the engagement between these racks and the pinions 21 will.cause the pinions to travel one half the distance of the carriage'in itsmovement from side to side of the machine and to produce a correspondingmovement of the roller separators and the anti-friction rollers carriedthereby. The construction is therefore effective to prevent an unduedisplacement: ()It the anti-friction rollers 6 and T and to maintain afixed relation between said. rollers and the carriage, and betweenparallel plates of .the separator, a sp ndle said rollers and the fixedframe of the machine at any given point in the travel of the carriage.That is to say, When the carriage is centrally positioned on the frame,for example, as shown in Fig. 2, then the rollers for each companionpair of tracks will be in the positions shown relatively to the carriageand relatively to the frame, and these positions of the rollers willalways be the same when the carriage is centered.

\Vhen I refer herein to anti-friction rollei-s, this term is used in abroad sense and is intended to apply to such rollers, what-- ever may hethe shape thereof.

The carriage and the manner of supporting and guiding it is the same asthe con.-

struction usually embodied in the No. 10 Remington machine,'altlmugh theplaten ET is merely conventionally shown in Fig. 1. It will beunderstood that it is merely new sary to add the spindles lt pinion i land racks 23 and 25 to the ordinary equipnns-nt of the No. 10 Remingtonmachine in order to embody my invention in such machine, and that I haveprovided simple and ellieient means for maintaining the proper relationbetween the anti-friction rollers and the frame of the machine andcarriage.

lVhat I claim as new and desire to secure by Letterslatent, is:-

In a typewriting machine, the combination of a carriage, a grooved trackcarried by the tarriage, a grooved track carried by the fame of themachine, said tracks being spaced apart horizontally, anti-triethmcarriage supporting rollers in said grooved tracks, a separatorcon'iprising parallel plates between which said rollers are received andto which they are pivoted to maintain a fixed relation between therollers, a block between and secured to the mounted in said block andpassin r through the space between said tracks, a pinion carried by saidspindle, a rack fixed to the carriage an'd"cooperative with said pinionon one side thereof, and a second rack fixed to the frame of then'iachine and coinaerative vith said pinion on the opposite sidethereof.

Signed at city of lV-ashington, .l)istrict of Columbia, this 9th day ofMay, A. .D. 1910.

LOUIS N. LAM I l.

Witnesses W M. H. in: Mom, Ci-ras. E. Cnua'rnixn.

